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common/lzma/lzma.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+//	Purpose: LZMA Glue. Designed for Tool time Encoding/Decoding.
+//
+//  LZMA Codec interface for engine. Based largely on LzmaUtil.c in SDK
+//
+//  LZMA SDK 9.38 beta
+//  2015-01-03 : Igor Pavlov : Public domain
+//  http://www.7-zip.org/
+//
+//====================================================================================//
+
+#ifndef LZMA_H
+#define LZMA_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+//-----------------------------------------------------------------------------
+//	These routines are designed for TOOL TIME encoding/decoding on the PC!
+//	They have not been made to encode/decode on the PPC and lack big endian awarnesss.
+//	Lightweight GAME TIME Decoding is part of tier1.lib, via CLZMA.
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+// Encoding glue. Returns non-null Compressed buffer if successful.
+// Caller must free.
+//-----------------------------------------------------------------------------
+unsigned char *LZMA_Compress(
+unsigned char	*pInput,
+unsigned int	inputSize,
+unsigned int	*pOutputSize );
+
+//-----------------------------------------------------------------------------
+// Above, but returns null if compression would not yield a size improvement
+//-----------------------------------------------------------------------------
+unsigned char *LZMA_OpportunisticCompress(
+unsigned char	*pInput,
+unsigned int	inputSize,
+unsigned int	*pOutputSize );
+
+//-----------------------------------------------------------------------------
+// Decoding glue. Returns TRUE if succesful.
+//-----------------------------------------------------------------------------
+bool LZMA_Uncompress(
+unsigned char	*pInput,
+unsigned char	**ppOutput,
+unsigned int	*pOutputSize );
+
+//-----------------------------------------------------------------------------
+// Decoding helper, returns TRUE if buffer is LZMA compressed.
+//-----------------------------------------------------------------------------
+bool LZMA_IsCompressed( unsigned char *pInput );
+
+//-----------------------------------------------------------------------------
+// Decoding helper, returns non-zero size of data when uncompressed, otherwise 0.
+//-----------------------------------------------------------------------------
+unsigned int LZMA_GetActualSize( unsigned char *pInput );
+
+#endif